Teaching aims
1．Revise the passive voice(including the infinitive) and know the exact meaning of the structure.
2．Be able to use the useful words，expressions and structures correctly.
Teaching procedures
Step 1 Revision
Ask students to answer the following questions without referring to the textbook.
1．What was going to be tested out by Larry's wife，Claire?
2．How did Larry Belmont finally persuade his wife to accept the experiment?
